Talking-moving-picture apparatus



w. M. CLARK TALKING movme PICTURE APPARATUS Filed April 5, 192::

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TALKING MOVI NG PICTURE APPARATUS I Filed April 5, 1922 7 Sheets-Sheet A 76 Fi .9. 2 9

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Patented Jan. 13, 1925.

PATENT OFFICE.

WILL I. CLARK, 01' EAST ORANGE, NEW JERSEY.

I TALKING-MOVING-PICTUBE APPARATUS.

Application filed April 5, 1922. Serial No. 549,748.

To all whom it may concern Be it known that I, WILL M. CLARK, a citizen of the United States, and resident of East Orange, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Talking-Moving-Picture Apparatus, of which the following is a specification.

This invention relates to that type of apparatus in which a phonograph or other speech reproducing mechanism, is used in connection with a moving picture machine by means of which motion pictures or pictures of objects in motion, are projected upon a screen. A talking moving picture apparatus of this class to be commercially successful must be so constructed and operated as to assure the movement of the phonograph record in synchronism with the picture film; must provide means for controllin the operation of the phonograph from t e film; must provide means for mstantly stopping the phonograph record without changing the relation between the re cord and the reproducing stylus-or needle in order to prevent unnecessary and discordant soundswhich occur whenever a phonograph record is slowed down before coming to a full stop; must provide meansfor instantly picking up the record and starting it at the right speed to immediately produce a natural and proper tone; must provide means whereby a plurality of records may be simultaneously or independently set in motion and simultaneously or independently stopped, said phonograph records being controlled by the film or by manually o 'erable means, as may be necessary during t e projection of the picture.

It is the main object of this invention to provide a talking motion picture apparatus having all of the necessary functions and operations, as hereinbefore set forth, for completely successful commercial use. As hereinafter set forth, this invention provides means for automatically controlling the operationof the phonograph from the film. It provides means for instantly stopping phonograph records without changing the relationbetween the record and the reproducing stylus or needle. This permits the entire surface of the record to be used for speech or music for the reason that the record may be stopped while the film is moving where there is no speech accompanying the pictures, and permits the speech to be instantly resumed or picked up at the proper point in the display of the film. It is manifest that this starting and stopping of the record must be so controlled that the pro. er tone will be maintained until the record is stopped, and the proper tone must be immediatel picked up again when the record is starte It is a great advantage to secure these results without varying or changing the engaged relation of the record and the reproducing stylus or needle. By means of the invention herein described these desirable results are obtained.

This invention also provides means where-- by a plurality of records may be simultaneously or independentl set in motion and simultaneously or in ependently stopped. The means for starting and stopping the phonograph records are automatically controlled by the film as it moves through the projecting machine, and in addition said records may be controlled in starting and stopping by manually operable means so that said records may be at any time started or stop ed by the operator independently of the lm. This is of advantage in that it adapts the phonograph apparatus for use with non-synchronized films.

In a talking moving picture apparatus of the class herein described, the phonograph record holders are intermittently driven from the projector shaft of the moving picture machine. This shaft rotates continuously and the record holding and driving means are intermittently connected to and disconnected from said shaft, in order tostart and stop the phonograph record. It is one of the important objects of this invention to (provide improved means for connecting an disconnecting these mechanisms. In carrying out this part of the invention, the constantly rotating vmeans driven by the projector shaft is heavy and is located below the table or support which carries the phonograph record holder. The phonograph record holder and the parts connected thereto and rotating therewith'are made as light as possible. The object of this is to have the inertia of the constantly moving part so much greater than the inertia of the intermittently moving parts that when the load of the nonrotating parts is imposed on the rotatingvparts, there will be no retardation of the constantly moving parts and the nonrotating parts will be picked up and almost instantly started at the normal s eed of the constantly rotating parts; This is important in'order that the record may start at the normal speed to' produce the desired tone. The heavy constantly r0 tating parts are located below the table or support for the phonograph records in order that the centrifu al force thereof shall not result in undue vi rations of the phonograph records.

Another object .of the invention is to provide friction clutch and friction brake members for starting and stopping the phonograph. record holder, the said clutch and brake members being substantially coextensive in area withv the record in order that the. leverage exerted on the rotating shaft by. the, friction members shall becoextensive with the leverage exerted thereon by the inertia of the record and 'itsfsupport.

Another important object of the invention is to provide a novel means for connecting and disconnecting the record holder and the projector shaft. This mechanism is-automatically controlled by the film. and

isdesigned to operate without jar or shock.

There'aremany other important objects and advantages of the invention which will more fully hereinafter appear.

Fig. 1 is adiagrammatic view of theentire apparatus and the electric circuits controlling the operation of the phonographs and the projecting machine;

,Fig. 2 a diagrammatic view of the film con-- trolling circuit making, and brake devices; Fig. 3 a detail view of a portion of a motion picture film provided with slots for controlling the operation of phonographs;

Fig. 4 a plan view of the duplex phonop Fig. 5 a vertical longitudinal sectional viewof one half of the duplex phonograph, the other half being shown in front eleva- .t1on; I

Fig. 5'- an enlarged detail sectional view of the lower end ofthe record carrying shaft and the clutch members;

Fig. 5 a sectional view on theline b" -5" of Fig. 5; V

Fig. 6 a detail view partly in vertical section of the emergency brake operating on the projector shaft;

Fig. 7 a bottom plan view of the duplex phonograph;

Fig. 8 a detail vertical section al view on the line 8-8 of Fig. 7;

Fig. 9 a detail side elevation partly in section of the step-by-step means for connecting and disconnecting the phonograph tating means, the narts being shown inthe positions they occupy when the phonograph record holder is connected to its driving means;

Fig. 12 a detail view of the ratchet wheel by means of which the step-by-step clutch operating means is rotated; I p

Fig. 13 a detail view of the toothed cam which operates to release the clutch from its locked-up or driving position;

Fig. 14 a detailview of the toothed'cam which releases the toggle lever,7 V

Fig. 14 a detail view of the ratchet wheel and the toothed cams for operating the clutch mechanism Fig. 15 a'detail side elevation of a portion of the step-by-step clutch operating means showing thepart's in the positions which they assume. to release theclutch from its locked-up or driving position;

Fig. 16 a view similar to Fig. 11 showing the parts'inthe positions which they as sume when the clutch means is released from its locked-up or driving position, said parts being shown in their nondrivingposition;

Fig. 17 a detail plan View of the clutch operating mechanism with the parts'in the positions shown in Fig. .16, the clutch being in its nondriving position;

Fig. 18 a detail view similar to Fig. 15, showing the ratchet wheel and toothed cams advanced onestep to cause the release of the clutch mechanism from its nondriving position;

Fig. 19 aview similar F 16 showing the clutch mechanism released from its nondriving position and engaged with the projector shaft; 4

Fig. 20 a view similar to Fig. 17 showing the toothedcams advanced one step to cause the release of the clutch mechanism from its nondriving position, said parts being in the position corresponding to the position shown in Fig. 19; H I

Fig. 21 a detail horizontal sectional view on the line 21-21 of F ig. 19; 4 r

Fig. 22 a side elevation of the reproducer and its supporting bracket and the feed imeans;

Fig. 26 a detail view of the means for automatically lifting the reproducer from the phonograph record; and

Fig. 27 a detail side elevation showing the reproducer in its elevated position.

The moving picture apparatus is shown diagrammatically in Fig.1. In that view 1 designates the reel from which the film '2 is unwound. The film passes between the usual fire wheels 3, around the tension roller 4 and the feeding sprocket wheel 5, beyond which it forms the loop 6, after which it passes through the'aperture plate 7, thence around the sprocket wheel 8, between the fire wheels 9 to the take-11p wheel 10. d

Behind the aperture plate 7 there are provided three sets of spring contacts 11, 12 and 13. The springs 11 are controlled by a roller 14 which is mounted on one end of a pivot arm or spring'and normally tends to assume a position inside of acorresponding slot in the aperture plate due tothe tension of the spring 11, or of any other suitable spring. The spring 12 is controlled by a roller 15 which normally tends to assume a position within a slot in the aperture plate. The spring 13 is also controlled by a roller 16 which normally tends to assume a position within a slot in the aperture plate. When the film is in position, these rollers are ordinarily pressed back against their springs, as shown in Figs. 1 and 2. The projector, including the aperture plate, is illustrated diagrammatically by a rectangle 17 and in that rectangle the true relative positions of the rollers 14, 15 and 16 are diagrammaticallyillustrated. The roller 16 is shown as arranged to engage the film about midway its side edges, while the rollers 14 and 15 are arranged to engage the film along its longitudinal edges. The rollers 14 and 15 are adapted to pass through slots 14 and 15 formed in the film along its longitudinal edges while the roller 16 is held in its pressed back position throughout the length of the film unless, of course, the filmshould break. The rollers 14 and 15 are designed to operate one or the other of the two driving means and the slots 14 and 15 are arranged along the side of the film at the proper points to stop and start the desired records. The roller 16 is designed to operate an emergency stop'whenever'the film 1s broken.

The springs 11, 12 and 13 are contact members to which circuit wires are connected. The are adapted to engage similar contact members 11, 12" and 13?. The contacts 13 and 13" are normally in engagement so that the circuit through them is normally closed. The contacts 11 and 11 and 12 and 12 are normally separated so that the circuits through them are normally open. The rollers 14 and 15 hold their corresponding contacts out of engagement and release them when the said rollers enter the slots provided along the longitudinal edges of the film. The roller 16 is arranged to separatethe contacts 13 and 13" whenever a break occurs in the film. All of these circuits andthe operation of the contacts will be fully herein after described.

The projector shaft 18 is continuously driven y an electric motor M, said motor being connected to the shaft by a driving belt 19, so'that the shaft is continuously rotated. Two phonographs A and B are arranged to be connected to and disconnected from the projector shaft. The phono raph A is controlled in its operation by an electrically controlled clutch operating means A and the phonograph B is controlled by a similar mechanism B. The controlling means A is energized through the roller 14 and contacts 11 and 11. The controlling means B is energized through the roller 15 and the contacts 12 and 12.

In the motor circuit, interposed between the generator G and the motor, is a main switch S. The main switch is provided with aspring 20 which normally holds it in open position. An electro magnetic latch 21 holds the switch closed. The magnet 22 is in a closed circuit so that said latch will be released when the circuit is broken. The circuit of this electro magnetic locking means is controlled by the roller 16 and the contacts 13 and 13, so that should the film break, the 'said circuit will be immediately opened and the switch thrown to its open or circuit breaking position.

On the projector shaft is mounted a heavy fly wheel 23, said wheel also serving as a brake wheel, as shown in Fig. 6. The brake band is adapted to be clasped about the brake wheel by means of a lever and spring, as will be more fully hereinafter described. It is adapted to be held in its off position by an electro magnet 24, said magnet being in a closed circuit controlled by the contacts 13 and 13 and the roller 16. It is manifest, therefore, that should the film break, the electro magnet 24 will be deenergized and the brake will be released for immediate engagement with the brake wheel 23. This serves as an emergency brake to immediately stop the projector and the phonographs. The electro magnet 22 being in the same circuit with electro magnet 24, it will be deenergized therewith, thus simultaneously openmg the main switch and applying the emergency brake.

For the purpose of manually controlling the operation of the phonographs, switch devices A and B are provided. The switch device A is in the circuit of the controlling deviceA while the switch 13 is in the circuit of the controlling device B. By means of the two switches A and B, the phonographs may be independently controlled and may be used in connection with nonpendently and separately'or both of said refor transverse movement across the record as shown. Each reproducer is in electric circuit with a receiving lnstrument B so that each reproducer may be operated inde- Y producers may be in operation simultaneousliy. Y

T e combined brake and flywheel 23 is encircled by a brake band 25, one end of which isrigidly' secured to the underside'of the phonograph table or support, the other end being connected to the lower end of an operating lever 26, saidjlever being pivoted at 27 in. the main-frame. Connected to this lever above its pivot and near its upper end is a coil spring 28, said spring normally pulling-the lever in the proper direction to tightly clamp the band on the brake wheel. Said lever is provided with a handle at its upper end for manual operation. The electhe core of t e magn tro magnet 24 is mounted on the table 01 support close to the lever 26 and said lever is provided with an armature 29 adapted to be attracted by. the magnet 24 'when said magnet is energized. As the lever moves toward'the electromagnet the brake band will be loosened on they brake wheel andthe 28. Connected to the lever 26 and sliding through a suitable guide. ost is a latch bar 30, said bar being provi' ed with a lug31 adapted to lock against thepost to hold the lever close to the core of the magnet but not in actual contact therewith, so that when said latch is in operation'there will be a slight air ga between the armature 29 and at. A spring32normally holds the latch bar in its upper position to prevent the lug 31 engaging and locking against the guide post. The latch 30 is provided with a finger piece 33 at its free end so that when it is desired to cause the latch bar to engage the 0st, the said barmay be depressed against tie action of the spring 32. In operation the electromagnet 24 is deeuergiz'ed whenever the contacts 13 and 13 are separated and the lever 26' is then free to be thrown to its brake applying positionby spring 28. The electromagnet 24 is not strong enough to. pull the lever 26, to its brakereleasing position, said lever therefore must be manually thrown over to lace the armature 29 in direct contact wit the magnet core. The lever will then be held in its brake releasing position by the electromagnet against the tension of the spring 28. As soon as, "however, the electromagnet circuit is broken, the spring pull of the magnet is opposed by the spring will throw the lever is its brake applying position and clampthe brake band tothe brake-wheel. If it be desired to hold the.

brake band in its release position with the magnet 24 deenergized, thezsto bar 30 is pressed downwardly to bring tielatch 31 into engagement with the guide post. When the lever is released from the magnet the. spring .28 will hold the latch 30' against said postand prevent the lever 26 swinging to its brake applying position. If it be desired tolock the brake in its release position and free of-theelectromagnet when operating the phonograph manually, it is only necessary to depress the latch bar and then, manually pull the lever 26 to detach the armature 29 from the electromagnet. This will permit. the lever to swing away from the electromagnet slightly and as soon as the contact between the armature 29 and the magnet core is broken, the spring 28 will hold the latch against the guide post. The lever and brake bandwill remain in this p0.- sition until the. lever is manually shifted and will not .be affected by. the. electromagnet. Y Y v. v

The phonograph apparatus illustrated in the drawings is duplex in form, thatisto say the phonographs A and B are mounted in a heavy table or support 35 which is carried by suitable legs. The projector shaft 18 is mounted on suitable bearings 36' setwo sections are connected togetherat a point between thephonograph driving means and the driving belt 19 by'a flexible coupling 37. This coupling maybe of any suitable construction and is-for the purpose of preventing jars or shocks in phonograph apparatus when the phonograph record holders are connected to anddisconnected from their driving means. A portion of the projector shaft may be flexible, if desired, for the same purpose. A

The phonographs A and B are exactly alike in construct-ion and operation. Forconvenience of arrangement they are shown as mounted in a single table and'the projector shaft is extended horizontally under the table, and arranged to be connected to the driving mechanism of both of the phono graphs. .It isj manifest, however, that the phonographs may be arranged in any de-..

top and below the bearings 89 is a. large worin wheel 40. The projector shaft is provided with a worm 41 which engages said worm wheel so that the hollow primary shaft is directly connectedto the projector shaft and .is driven thereb Rigidly secured to the lower end of t e hollow shaft is a large heavy disk 42 which serves as a fly wheel and also as a clutch member. This fly wheel is horizontally disposed and is constantly rotated through its direct connection with the projector shaft. Theworm 41 and the worm gear 40' are so proportioned that the disk 42 will rotate at the normal speed of a phonograph record .to produce the desired tone. This speed is usually about 80 revolutions to the minute. The hollow shaft 38 is held in its bearings against vertical movement by suitable collars arranged above and below the bearings 39 .and said shaft is open atboth its ends. The disk 42 is as large in diameter, as the largest record likely to be used on a phonograph. In actual use this disk has been made twelve inches in diameter and of heavy cast metal such as iron. It is arranged-below the table and on the lower end of the shaft 38 in order, to place the center of gravity of the machine as low as possible to revent undue vibrations of the machine an ofthe phonograph shaft because of the rotation of said heavy disk at high speed. The under side of the fly wheel disk 42 is covered with any suitable compressible friction material 43 such as felt or the like in order that said disk may act efliciently as a clutch member.

A tubular record carrying shaft 44. is mounted within the hollow primary shaft The record carrying shaft 44 is free to turn Within the primary shaft and is held against upward movement by a collar 45 rigidly connected to the lower end of shaft 44 and engaging the lower end of the pri-v mary shaft 38. The upper end of the record carrying shaft extends above the table 35 and above the upper end of the primary shaft. Rigidly securedto the upper end of the record carrying shaft is an upwardly extending thimble 46 to the upper end of which the record supporting table 47 is ri idly secured. The lower end of the thimb e 46 abuts the upper endof the hollow shaft 38 and thus holds the shaft44 against downward movement. Threaded into the up or end of the record carrying shaft is a dou le ended lag bolt 48, said bolt being provided with a central angular portion- 49 to receive a suitable wrench by means ofwhich the lower end of the lag bolt may be screwed into the upper end of the record carrying shaft. The upper end of the bolt 48 is threaded to receive aclamping nut 50, by means of which the record 51 and'its holding disk. 52 may be tightly clamped to the table'47. Suitable friction material is interposed between the plate 52, the record 51 and the table 47 to hold the record firmly in position and prevent any slippage or movement thereof.

bar to have a slight vertical movement within the record carrying shaft. By means of the key and key way the clutch bar must rotate with the record carrying shaft, but is capable of a slight vertical or telescopic movement within saidshaft. A compression spring 56 is mounted within the record carrying shaft, the lower end of said spring bearing on the upper end of the clutch bar and normally forcing it downwardly-to its lowermost position. The tension of this spring may be adjusted by means of a screw 5 within the record carrying shaft and threaded through a rigid block mounted therein. The lower end of the adjusting screw is connected to the u per end of the compression spring so that y rotating said screw the tension of the spring on'the clutch bar 53 may be varied. Secured to the clutch bar below the fly wheel 42 is a clutch disk 58. This clutch disk is of thin light material and is of the same diameter as the fly wheel 42. Its upper and lower surfaces are covered with compressible friction material 59 and 60, such as felt or the like. This clutch disk is preferably formed of aluminum, but it may be madeof any suitable light and strong material. Below the clutch disk and supported by depending posts 61 is a stationary rigid brake disk 62. This stationary disk is equal in area to the clutch disk and to the fly wheel 42 and is covered at its upper surface with a suitable compressible frictionmaterial 63, such as felt or the like. The space between the fl wheel 42 and the stationary disk 62 1s sufficient to permit the clutch disk 58 to have a slight movement up-and-down between said parts.

The-stationary clutch disk is formed with an aperture at its center through which the clutch bar extends. It is manifest that the record carrying shaft must rotate with the .clutch disk; and that the said clutch disk 1 table, its outer end, that is to say, the end at shown clearly in Fig. 7. The c'rank arm 66 is connected to the end of a clutch operating lever 67, said lever extending directly across the vertical center or axis of the record car- .rying shaft, its other endbeing pivoted in a rigid support 68 depending from the bottom of the rigid brake disk 62. .Pivotally connected to the lever 67 is an upwardly ex-- tending bearing block 69. which is formed and rotating on the stud 80 with said ratchet with a socket adapted to receive a free bearing ball-and a rigid bearing pin secured in I the lower end of the clutch bar 53 andengaging the bearing ball. The spring 56 maintains the clutch bar pressed downwardly, and the-bearing pin and bearing pawl 1n 'enga ement with the bearing block 69. It is manifest that by rocking the shaft 64 in the direction indicated by the arrow in Fig. 11, the lever 67 will be swung upwardly thereby moving upwardly the clutch bar 53, compressing the spring 56 and bringing the clutch member 58 into engagement with the flywheel 42. When the rock shaft 64 is free to move in the direction'indicated by the arrow in Fig. 16 the spring 56 will move the clutch'bar downwardly, thereby freeing the clutch disk 58 from the fly wheel and bringing it into engagement with the rigid stationary brake disk 62. The means for rocking thejshaft 64' are connected to the crank arm 65. a V

The mechanism for rocking shaft 64 of the B phonograph is designated B and the mechanism for rocking the shaft 64 of the .A' phonograph isdesignated A. mec anisms are exactly alike and a description of one will serve as a description of both. Each ofthese mechanisms is con-.

trolledby a solenoid and the circuit of that solenoid is closedand opened by film-controlled contacts, as herelnbefore: described. Said circuits are also controlled by the manually operable switches A and B as hereinbefore set forth. Mounted on a depending bracket 70 secured to the under side of the table 35 is a solenoid 71 having a core 72* said link is the upper end of a lever 74,

said lever being pivoted at 7 5on the. bracket 70. Connected to the lever 74 is a strong springr76 which normally holds said lever against a stop 77 with the solenoid core retracted or in its outer position with respect to its coil.

Bivote'd to the lower end of the lover 74'below its pivot is aspring pressed pawl 78 which is adapted to engage in the These teeth of a ratchet wheel 79 mounted on a rigid horizontal stud 80 carried by the bracket 70. \Vhen the solenoid is energized its core is drawn inwardly and through'the connected lever and paw] the ratchet wheel is rotated the distance ofone tooth.

turns'the lever and its pawl-to their normal inactive ositions ready to again-act on the ratchet w eel and rotate it another step upon wheel is aclutch'releasin I cam 82 and a toggle releasing cam 83. ach of these cams is provided with eight radial teeth, and said cams are so arranged with respect to each other that their teeth are staggered, a tooth of one cam lying between the adjacent teeth of the other cam. The clutch releasing'cam is arranged with the operating faces of its teeth coincident with the operating faces of eightof the teeth on the'ratchet wheel'and the teeth of the toggle-releasing can'i are arranged with their operating faces coinci-' dent withthe operating faces of the other eight teeth'of the operating ratchet wheel. so that the teeth of the clutch releasing cam lie in between the teeth of the toggle releasing cam when viewed in side elevation. as illustrated injFig. 14. The purpose of this arrangement is that the clutch releasing'cam will operate when the ratchet wheel is moved one tooth and then on the next movement of the ratchet wheel the toggle releasing cam will operate. The ratchet wheel and the two toothed cams are preferably rigidly connected together by suitable pins so thatlthey will all rotate as a unit.

In describing the operation of the'clutch releasing and the toggle-releasing cams the parts will be assumed in position with the clutch released and the phonograph not running. The parts in this position are illustrated in Figs. 15, 16 and 17. The mechanism actuatedby\the toothed cams is connected to the crank arm65 of the rock-shaft 64. This mechanism comprises an upwardly extending link 84 to the upper end of which ispivoted a short upwardly extending link 85, these two links constituting a toggle lever. The upper end ofthe link 85 is longitudinally slotted a'nd receives a rigid pin 86 mounted in the bracket '70. The pin 86 is almost directly above the pivotal connection between the link 84 and the crank arm 65 and the joint'between the toggle links is designed to be swung to one side or the other of a line' drawn through the center of the pin 86 and the said pivotal connection, as will be fully hereinafter described. Piv- When .the solenoid is de-energized the spring 76 re- .Figs. 16 and 19. The togglelink 84 is provided with an adjustablestop 89 which is adapted to be engaged by the toggle breaking lever 87. The purpose of this is to so adjust these parts with relation to each other as to secure the proper operation thereof. Pivotally mounted on the bracket 70, and arranged to swing horizontally, is a toggle stop 90. This stop is formed with two s oulders 91 and 91 on opposite sides of its pivot. It is also formed between said shoulders with a horizontal setting-arm 92 which carries at its free end an inclined cam 93 which lies in the path of the link 84 of the toggle. \Vhen the clutch members are disen aged and the phonogra h is not running the link 84 of the toggle will bear against the shoulder 91 of the toggle sto being forced to that position by the. toggle reaking lever 87. The toggle stopis locked against rotation on itsplvot by a pawl 94 which is mounted on a vertical pivot 95 carried by the bracket 70. The pawl 94-is rovided with an arm 96 on the opposite SiCB of its pivot from the stop and said arm carries at its free end a beveled head 97, the beveled edge of which lies in the path of the teeth of the toggle releasing cam 83. The teeth of the cam 83 are adapted to engage the beveled edge of the head 97 and to thrust said head outwardly away from the toothed cam, thereby swinging the pawl on its pivot and releasing it from the shoulder 91 of the tog le stop. A spring 98 bears on the head 97 and yieldingly maintains the beveled surface of said head in the path of the teeth of the toggle releasing cam 83. When the toggle stop is released the toggle breaking lever 87 will force the link 84 of the toggle toward the adjacent projector shaft and into engagement with a fixed stop 99 (see Fig. 19). This movement of the toggle link 84 toward the projector shaft brings a do 100. which is formed near the upper end of the link 84. into the path of a rotating expansible clutch applying cam 101 mounted on the adjacent projector shaft. This expansible cam 101 operates to force the toggle against the tension of the toggle breaking lever for the purpose of applying the clutch, as will be hereinafter described.

The cam 101 comprises a head 102 rigidly fixed to the projector shaft to turn therewith. This head is formed with an annular chanby annular flanges 103. The bottom of the channel is shaped to form three flat tangential surfaces 104. spaced equal distances apart around the projector shaft. The ends of these tangential surfaces are connected together by short curved surfaces, but the tangential surfacesfo'rm the major portion ot the bottom of the channel and form final rigid stops for the pivoted cam arms mounted in.the channel. Pivoted in tlrechannel and on pivots passing through the two flanges 103 are three long curved cam arms 105. The pivots of said cam arms are spaced equal distances apart around the head 102 and the cam arms lie in the channel except that their beveled engaging ends project beyond the periphery of the head to fIm ratchet-like teeth 106. A portion of the inner side of each cam arm is formed straight in order to adapt it to lie close to the adjacent tangential surface 104. This is merely for the purpose of enabling the cam arms to be closely arranged within the flanges of the head 102. The ivot 107 of each cam arm is rigidly pinne to the cam arm and is adapted to oscillate in its flanges.

Each pivot 'is extended beyond one of the flanges 103 and around this extended portion of the pivot is coiled a spring 108. One 'end ot' this spring is rigidly attached to a collar 109 forming a part of the head 102. The. other end of the spring is attached to the pivot, and the tension of the spring holds the cam arm in the channel between the flanges 103. It is manifest that the cam arm may be thrown outward radially by presure on the ratchet toothed portion 106, said pressure being opposite the direction of rotation of the projector shaft. The end 100 of each cam arm engages the pivoted end of the nextadjacent cam arm. so that the ends of said cam arms overlie each other around the shaft when. in their normal position, as shown clearly in, Fig. 16.

When the toggle link 84 is released from the toggle stop and swung to the position shown in Fig. 19, the dog 100 of said link is thrown into the path of the portions 106, of the cam arms. As the projector shaft and the clutch ap lying cam are rotated in the direction indicated by the arrow in Fig. 19, the dog 100 will be immediately engaged by the projecting end 106 of one cam arm. The continued rotation of the .projector shaft will cause the cam arm to swingoutwardly on its pivot against the tension of its spring. This outward swinging movement of the cam arm will thrust the toggle link 84 toward the right hand as viewed in Figs. 16 and 19, moving the toggle link on its pivot and against the tension of the spring on the toggle breaking lever 87. As the projector shaft continues to rotate the engaged cam arm will be extended laterally toward the right, as viewed in Fig.19, until the pivot of the engaged cam arm p above a line drawn through the center of the projector shaft and the end ofthe dog 100. When the pivothas reached this point in its movement its point of greatest extension will have been reached and the toggle link 84 will be near the limit ofits movementtoward the right. As the pivot rises above said point the engaged cam arm' will be gradually withdrawn from under the dog until it finally snaps ofi' the end thereof. The spring around the pivot of the engaged cam arm will then immediately swing'the cam arm to its inner normal position; As the'engage'd cam arm is i gradually extended or moved outwardly througl'i its engagement with the dog 100, its pivoted end will swing around and force outwardly the contacting end of the next adjacent cam arm. The'two'cam" arms will then move outwardly against the tension of their springs and when the second cam arm has "been moved outwardly or extended somewhat, its pivotedend will pick up and move outwardly the third cam arm. All

of these cam arms will be somewhat extended at the time when the engaged'cam arm has reached; its point of greatest extension.

stantly increasing tension placed upon the engagedcam arm, as the said cam arm forces The result is that there is a conthe link 84: of the toggle across its dead center. When the extended cam arm wipes .over the noseofthe dogj100 it gives the final thrust to the'link 84. This position of the parts is shown in Fig. 11. At this point in the rotation ofthe projector shaft,

one edge of the engaged-cam armlies against the adjacent tangential face 104 of: the cam head 102. This holds the cam. arm-ri id and insures the full 'throw' of the toggle link 84. When the engaged cam arm is released from the dog 100 all of the cam arms will be immediately returned to their normal inner positions by their springs 108. The

toggle links 84 and 85 are thrown overslightly beyonda line drawn through the pin 86 and the center of the pivotal connectionbetween the lower end ofthe'lli rlilk 84 andits connected crank arm 65. purpose ofthis is to hold the toggle beyond its dead center and in its clutch applying position. The movement oi. the toggle link 84 to the position'shown in Fig. 11 rests the toggle stop, as shown in Fig. 9. As the link 84 isthrown over,- as described,

the toggle breaking lever 8i is moved on its pivot to bring its latch 87? into engagement with a latch 109 which is rigidly mounted on a rocking pivot 110. The latch 109 is spring pressed, as will be presently described, and holds the toggle breaking lever in its latched position. is slottedat its upper end to permit the link84 to swing as described. The pin86 serves as a thrust block and engages the lower wall ofthe slot in the link 85 as The link 85',

the toggle is thrown .to and over its dead center. As the toggle links are brought to a' straight line the crank arm isswung downwardly and the shaft 64 rocked in its bearings. The crank arm 66 of said rock shaft will be swung upwardly, thereby forcing upwardly the'lever 67. This up ward movement of the lever- 67 forces the clutch bar 53 upwardly and brings the. clutch plate 58 into "engagement with. the clutch- Isureof the clutch plate 58 against the clutch member 42. Thc clutch-members will remain in engagement until the latch 109 is released to permit the toggle breaking lever to throw the toggle across its dead center. It will, of course. be understood that when the toggle is thrown across its dead center and broken, the spring 56 will immediately throw it to the position shown in Fig. 16, and separate 'the clutch members. The lever-87 servesas a stop to hold the toggle in its clutch-applied position. When the .toggle i's thrown'across its dead center an additional compression of the friction f acings 43 and 59 is caused, and these facings tend to expand after .the toggle has passed its dead center and thus assist the spring 56 in holding the toggle against the lever 87.

The rocking pivot 110 is mounted in the bracket 70 and'on said pivot is rigidly secured acrank arm 111. A spring surrounds the pivot with one end bearing on the crank arm 111 and one end bearing against a rigid stop. Said springs force the cam arm upwardly and also force the latch 109. upwardly into its latching position. The end of the crank arm 111 is in-the path ofthe clutch releasing cam 82 and is adapted to the toggle releasing'cam 83. After the solenoid has moved the ratchet wheel one tooth and has operated the toggle releasing cam. I

the next impulse from the solenoid will bring a toothof. the clutch releasing cam into engagement with the crank arm 111 and depress said arm sufficiently to release the latch 109 from the toggle breaking lever 87. The teeth of the clutch releasing cam a are so arranged that they will hold the latch 109 inits release position. as shown clearly in Figs. 15 and 16, and'the said latch and the crank arm' 111 will not be released until the solenoid has given the ratchet wheel its next impulse, so that the clutch braking lever will have ample time to swing out of the path of the latch 109 before said latch is released from the cam 82. This insures the operation of the toggle breaking lever. The crank arm 111 is stopped in its upper position by a stop pin 113.

The release and operation of the toggle breaking lever permits the spring 56 to move downwardly the clutch bar 53 and the clutch member 58, said clutch bar sliding in the record-carrying shaft 44. The downward movement of the clutch bar will carry the clutch member 58 into engagement'with the stationary brake member 62 and the record will be instantly stopped without varying the relation of the record and the reproducing stylus. As hereinbefore described, the clutch member 58 and the entire record holding mechanism is made as light as possible in order to reduce the inertia of these moving parts to a minimum. Thisinsures an instant stoppage of the record holder and the clutch member 58.

It is manifest that the yieldable expansible cam 101 will operate without jar or shock and yet will act so quickly that the engagement between the clutch member 58 and the constantly rotating fly wheel and clutch member 42 will be almost instant and the clutch 58 and the record holder will immediately be started at the normal speed to produce the desired tone. As hereinbefore pointed out, the inertia of the non-rot-ating part will be so much less than the inertia of the moving fly-wheel clutch member 42 that the member 42 will not be retarded by the imposition of the extra load. This operation is further assisted by the fact that the projector shaft carries a constantly rotating heavy fly wheel 23 and also that the driving gears are heavy and add considerably .to the inertia of the constantly moving mechanism. The s ring 56 isof sufiicient strength to force tie clutch member 58 into engagement with the stationary brake member 02 with the necessary force to stop the record carrying mechanism instantly.

lVhen the film breaks and the apparatus is stopped by opening the main motor circuit and applying the emergency brake, it is necessary to re-thread the film through the projecting machine. When this is done, itis necessary to advance the phonograph record in order to synchronize it with the film. This is done by rotating the clutch member 58 sutficiently to bring the phonograph record in synchronism with the film. To facilitate this operation, the brake plate is provided at its edge with an n standing index 114 which is adapted to register with index marks 115 on the clutch member 58. These index marks indicate the distance which the clutch member 58 must be rotated to compensate for a given number of pictures passed through the machine in the act of re-threading the film. By noting the number of pictures passed through the machine the exact distance which the record must be moved to compensate for those pictures may be readily determined. In practice it has been found desirable to advance the film a distance corresponding to the length of 36 pictures for re-threading it through the projecting machine after a break. For convenience and to avoid the necessity of counting the pictures, a standard gage indicating the required length may be used in measuring off the film. In order that the synchronization may be resumed it is necessary to advance the record to correspond to the advancement of the film, as usually arranged three revolutions of the record disk is sufiicient. When the film breaks the contacts 1111 and 1212 will re-engage each other, and the clutch of the operating phonograph will be thrown out and the record instantly stopped. Mounted in suitable bearin s and supports 116 extending upwardly from the table 35 is a threaded shaft 117. This shaft extends horizontally over thephonograph record and is driven by a belt 118 which passes over a pulley 119 on the threaded shaft and a pulley 120 secured to the record driving shaft 46. Mounted on the threaded shaft is a split clamp 121 consisting of two semicylindrical members 122 and 123 hinged together along their lower edges at 124. This split clamp is lined with a heavy pad of felt 125 which is adapted to be brought into engagement with the threaded shaft 117 to serve as a nut or threaded member for moving the split clamp along the threaded shaft. The felt pad 125 absorbs any little shocks or vibrations incident to the travel of the'clamp 121 along the shaft 117 and prevents their being transmitted to the reproducer. Around the pivot 124 is arranged aspring 126 whose ends engage the two members of the clamp and hold them in clamping engagement with the screw shaft. The member 123 is provided with a horizontally extending arm 127 to which is pivoted an arm 128, a duplex reproducer 129 being rotatably mounted on said arm. The reproducer carries the usual reproducing stylus 130, and said reproducer is supported in position over the phonograph record. The rotation of the phonograph record causes the rotation of the screw shaft and the consequent feeding of the reproducer along said shaft in order to enable it to follow the groove in the record. A duplex reproducer with a set of reproducing elements and electrical connections on either side is provided in order that either set may be used in case the other should be disabled. The reproducer is swiveled upon the arm 128 and is adapted to be turned through an angle of ninety degrees as shown vided with an upwardly extending pin 131.

The inner bearing 116 carries an upwardly extending rigid cam 132. When the splitv clamp approaches the inner end of the shaft 117, the pin 131 will engage the cam 132 and will rotate the split clamp on the threaded. shaft and lift the reproducer from the record. The cam 132 is formed with a stop shoulder 133 against which the pin 131 will come to rest after the reproducer has been lifted fromthe phonograph record. This shoulder also stops the longitudinal movement of the split clamp on the threaded shaft. Thefelt lining within the clamp per? mits the threaded shaftto rotate after the pin is in engagement with the stop 133, should the phonograph record carrying mechanism continue to rotate after the reproducer has been lifted therefrom.

Themember 123 of the split clamp is provided with an upwardly extending finger piece 134; and the member 122 is formed with a corresponding finger piece 135 which is pivoted thereto near its upper edge. :The finger piece 135 is provided with a bearing member 136 which impinges against the finger piece 134 near its lower edge. By forcing together the upper ends of the finger piece the lower end of the. finger piece 134 will rock .outwardly and thereby separate the two members of the clamp. This permits the clamp to be opened, so that the reproducer may be adjusted longitudinally along the shaft 117. Whenitis desired to detach the reproducerfrom the shaft the member 122 is moved bodily downwardly against the spring 126 as indicated in dotted linesin Fig. 23. t ,g

The provision of clutchsurfaces of large area renders practicable the use of a soft,

compressible material, such as .felt, for facing said surfaces The use of smaller clutch surfaces would result in a greater pressure perunit of area upon the soft compressible facingsand cause them to wear away or lose their compressibility. By the use of clutch surfaces of large area faced with a soft compressible material, apositive, velvety pickup of the clutches is obtained, with but a small pressure u on the'clutch facings. The

to each switch, a phonograph individual to ually starting and stopping. the phonographs, a reproducer operating on each phonograph, acircuit for each reproducer, a receiver electrically connected to each reproducer and independently operated thereby,- means for moving the film, means for driving the phonograph from the fihn moving means, and a film-controlled switch for stopping the film-moving means. i

2. A talking moving picture apparatus comprising means for moving a picture film, a shaft for supporting and driving a phonograph record, a fly-wheel driving-plate of large diameter and. of greater inertia than the said record and its shaft, means for constantly rotating said plate from the film moving means, a light clutch plate connected to the record-carrying shaft and substantially 'equal in diameter to thedriving plate, a stationary brake disk adjacent theclutch plate and substantially equal thereto in dia shaft for supporting and driving a phonograph record, a driving plate, means for rotating said plate from the film moving means, a-clutch plate rotatable with there;- ord-carrying shaft but movable axially thereof, a stationarybrake-disk adjacent the clutch plate and on the opposite side thereof from the drivingplate, a film-controlled switch, and an electro-magnetic step-by-step n1echanism controlled by said switch for moving the clutch plate alternately into engageg ept with the driving plate and the brake- 1s a.

1. A talking moving picture apparatus comprising means for moving av-picture film, a frame, a vertical hollow driveshaft mounted therein, a record-carrying shaft extending through the drive shaft, a fiy-wheel driving plate on the lower end of the drive shaft below the frame top, a record support on the upper end of the-record-carryi11g shaft abovethe frame top,mcans for rotating the drive shaft from the film moving means and connected to the said shaft below the frame top, a clutch plate below the driving plate andconnected to rotate with the record shaft and movable to and from the driving plate, a stationary brake-disk below the clutch plate, a film-controlled switch, and an electro-magnetic stcp-b'y-step mechanism controlled by said switch for moving the clutch plate alternately into engagement with the driving plate and the brake-disk.

5. A talking moving picture apparatus comprising means for moving a picture film, a frame, a drive shaft, a record-carrying shaft, a light-weight clutch plate connected to rotate with the record-carrying shaft and movable axially thereof, a heavy fly-wheel driving plate rigidly connected to the drive shaft close to and parallel with the clutch plate, means for rotating the drive shaftfrom the film moving means, a stationary brake-disk close to the clutch plate and in a plane parallel with the plane of said plate, a film-controlled switch, and an electro-magnetic step-by-step mechanism controlled by said switch for moving the clutch plate alternately into engagement with the driving plate and the brake-disk, the driving plate being so proportioned in weight to the weight of the clutch plate the recordcarrymg shaft and the connected record that the weight of the clutch plate record shaft and record when not rotating may be imposed on the rotating driving plate without retarding the movement of the driving plate.

6. A talking moving picture apparatus comprising means for moving a picture film, a frame, a vertical hollow drive shaft mounted therein, a record-carrying shaft extending through the drive shaft, a flywheel driving plate on the lower end of the drive shaft below the frame top, a record support on the upper end of the record carrying shaft above the frame top, means for rotating the drive shaft from the film moving means and connected to the said shaft below the frame top, a clutch plate below the driving plate and connected to rotate with the record shaft and movable to and from the driving plate, a stationary brake-disk below the clutch plate, a filmcontrolled switch, an electromagnetic step-by-step mechanism controlled by said switch for moving the clutch plate alternately into engagement with the driving plate and the brake-disk, and yielding means normally thrusting the clutch plate into engagement with the brake-disk.

T. A talking moving picture apparatus comprising means for moving a picture film, a drive shaft, a record-carrying shaft," a light-weight clutch .plate connected to rotate with the record-carryingshaft and movable axially thereof, a heavy fly-wheel driving plate rigidly connected to the drive shaft close to and parallel with the clutch plate, means for rotating the drive shaft from the film moving means, a stationary brake disk close to the clutch plate and in a plane parallel with the plane of said plate, a film-controlled switch. an electro-magnetic mechanism controlled by said switch for moving the clutch plate into engagement with the driving plate, and yieldable means normally thrusting the clutch plate into en gagement with the brake disk, the driving plate being so proportioned in weight to the weight of the clutch plate the recordcarrying shaft and the connected record that the weight of the clutch plate and its associated elements when not rotating may be imposed on the rotating driving plate without retarding the movement of the said plate.

'8. A talking moving picture apparatus comprising means for moving a picture film, a shaft for supporting and rotating a phonograph record, a primary drive shaft, a heavy fly-wheel driving plate rigidly mounted on said drive shaft, means connecting the drive shaft to the film moving means, a light-weight clutch plate close to and in-a planeparallel with the plane of tlre ,driving plate fid connected to rotate 'with the record-carrying shaft and movable axially thereof, a stationary brake disk close to and parallel with the clutch plate,

an electro-magnetic mechanism for thrust ing the clutch plate into engagement with the driving plate, and ieldable means normally thrusting the c utch plate into engagement with the brake disk, the driving plate being so proportioned in weight to the weight of the clutch plate the record-carrying shaft and the connected record that the weight of the clutch plate and its associated elements when not rotating may be imposed on the rotating driving plate without retarding the movement of the said plate.

9. A talking motion picture apparatus comprising means for moving a picture film, a hollow primary drive shaft, a recordcarrying shaft extending through the drive shaft, aphonograph record support on one end of said shaft, a clutch plate mounted on the other end of said record-carrying shaft and movable axially thereof. a heavy flywheel driving plate mounted on the drive shaft adjacent the clutch plate, a stationary brake disk mounted adjacent the clutch plate, means for thrusting the clutch plate into engagement with the driving plate, means for thrusting the clutch plate into engagement with the brake-disk, and filmcontrolled means forgoverning the movement of the clutch plate to the driving plate and to the brake disk.

10. A talking mm'ing picture apparatus con'iprising means for moving a picture film, a vertical hollow drive shaft, means for supporting said shaft. means for constantly driving said shaft from the film moving means, a heavy fly-wheel driving plate'rigidly connected to the lower end of the drive shaft. a record-carrying shaft extending through the drive shaft, a record support mounted on said shaft above the drive shaft. a light-weight clutch plate connected to the record-carrying shaft below the driving plate and movable to and from clutch plate to the driving plate and to the brake disk.

l1. A talking moving picture apparatus comprising means for moving a picture film, a shaft for supporting and rotating a phonograph record, a drive shaft,a heavy fly-wheel driving platev of large diameterand of greater weight than the record-carrying shaft and its connected rotating ,elements whereby. the weight of the recordcarrying shaftand its connected elements when not rotating may be imposed upon the rotating driving plate withoutretarding the speed of the driving plate, means for constantly rotating the drive shaft and driving plate from the film moving means, a lightweight clutch plate connected to the recordcarrying shaft and adapted to move axially thereof, said clutch plate being substantially equal in diameter to the driving plate, a stationary brake disk adjacent the clutch plate and substantially equal thereto in diameter, a film-controlled switch, and an electro-magnetic means operated by said switch to govern the movements of the clutch plate to the driving plate and to the brake disk.

12. A talking moving picture apparatus comprising means for moving a picture film, a hollow primary drive shaft, a rec- U ord-carrying shaft extending through the drive shaft, a driving plate connected to the lower end of the drive shaft, a clutch plate connected to the lower end of the record-carrying shaft and movablelaxially thereof, a stationary brake disk below, the clutch plate, a spring normally thrusting the clutch plate into engagement with the brake disk, a film-controlled switch, a stepby-step electro-magnetic means controlled bysaid'switch, a rotatable expansible cam operatively connected to the film moving means, means adapted to be engaged by the expansible cam for thrusting the clutch plate into engagement with the driving plate, means for locking the clutch plate thrusting means out of the path of the expansible cam, and means controlled by the clectro-magnetic device for releasing said locking means to permit the said thrusting means to move into the path of said cam.

13. A talking moving picture apparatus comprising means for moving a picture film. a drive shaft, a record-carrying shaft,

a driving plate connected to the drive shaft, a clutch plate connected to the record'- carrying shaft and movable axially thereof,

a stationary brake disk adjacent the clutch plate, means normally thrusting the'clutch plate into engagementwith the brake disk,

a film-controlled switch, a step-by-step electro-magnetic means controlled by said switch, a rotatable expansiblej cam, means adapted to be engaged by the expansible cam for thrusting the clutch plate into engagement with the driving plate, means for locking the clutch plate thrusting means out of the path of the expansible cam, and means controlled by the electro-n'lagnetic device for releasing said. locking means to permit the said thrusting means to move intothe path of, said cam. a

14. A talking moving vpicture apparatuscomprising means formoving a picture film, a drive shaft, a record-carrying shaft, a driving plate connected to the drive shaft, a clutch plate connected to the record-carrying shaft and movable axially thereof, a stationary brake disk adj acent the clutch plate, means norma-llythrusting the clutch plate into engagement with the brake disk, a film-controlled switch, a step-by-step elect-romagnetic means controlled by said switch, a

rotatable expansible cam, means adapted tov be engaged by the exp'ansible cam for thrust, ing the clutch plate into engagement with the driving plate, means for locking the clutch plate thrusting means out of the path of the expansible cam, means controlled by the electro-magnetic device for releasing said locking means to permit the said thrusting means to move into the path of said-cam, means for locking the clutch plate thrusting means in position to hold the clutch plate locked to thedriving plate, and means controlled by the electro-magnetic device for releasing said locking means to permit the clutch plate to move into engagement with the brake disk. V

l '15. A talking moving picture apparatus comprising means for moving a picture film,

a shaft for supporting and rotating a phono- 1 graph record, a drive shaft, a heavy fly-wheel driving plate of large diameter and of great er weight than the record-carrying shaft, and its connected rotating elements whereby the weight of the record-carrying shaft and its connected elements when not rotating may be imposed upon the rotating, drivingplate without retarding the speed of the driving plate, means for constantly rotating the driveshaft and driving platefrom the film moving means, a light-weight clutch plate connected to the record-cairving shaft, said clutch plate being substantially equal in diameter to the driving-plate, a stationary brake disk adjacent the clutch plate and substantially equal thereto in diameter, a filmcontrolled switch, and an electro-magnetic means operated by said switch to govern the movements of the clutch plate to the driving plate and to the brake diskQ 16. A talking moving picture apparatus comprising means for moving a picture film, a drive shaft, a record-carrying shaft,

a driving plate connected to the drive shaft, comprising means for moving a picture film, a'clutch plate connectedto the record-cara drive shaft, a record-carrying shaft, a rying shaft and movable axially thereof, a driving plate connected to the drive shaft, a stationary brake disk adjacent the clutch clutch plate connected to the record-carryplate, means normally thrusting the clutch ing shaft and movable axially thereof, a 70 plate into engagement with the brake disk, stationary brake disk adjacent the clutch a film-controlled switch, a step-by-step elecplate, means normally thrusting the clutch tro-magnetic means controlled by said plate into cngagement with the brake disk,

, switch, a toothed clutch-releasing cam, 21. a film-controlled switch, a step-by-step electoothed toggle-releasing cam in fixed relatro-magnetic means controlled by said 75 tion to the clutch-releasing cam, both of said switch, a rotatable expansible cam, a toggle cams being rotated step by step by the eleclever, means connecting the toggle lever to tro-magnetic means, a rotatable expansible the clutch plate, means for locking the togcam, means adapted to be engaged by the exgle lever out of the path of the expansible pansible cam for thrusting the clutch plate cam, means controlled by the elcctro-mag- 30 into engagement with the driving plate, netic' device for releasing the toggle lever to means for locking the said thrusting means permit it to move into the path of said cam, out of the path of the expansible cam, means. means for locking the toggle lever in posioperated by the toggle-releasing cam for re tion to hold the clutch plate in engagement leasing said locking means to permit the with the driving plate, and means operated 85 thrusting means to move into the path of said by the electro-magnetic device for releasing cam, means for locking the clutch plate said locking means to permit the clutch plate thrusting means in position to hold the clutch to be moved into engagement with the brake plate locked to the driving plate, and means disk.

35 operated by the clutch-re easing cam for re- 19. A talking moving picture appartus 90 leasing said locking means to permit the comprising means for moving a picture clutch plate to move into engagement with film, a drive shaft, a record-carrying shaft, the brake disk. a driving plate connected to the drive shaft,

17. A talking moving picture apparatus a clutch plate connected to the record-carrycomprising means for movinga picture film, ing shaft and movable axially thereof, a 95 a drive shaft, a record-carrying shaft, a stationary brake disk adjacent the clutch driving plate connected to the driveshaft, plate, means normally thrusting the clutch a clutch plate connected to the record-carry plate into engagement with the brake disk, ing shaft and movable axially thereof, a a film-controlled switch, a step-by-step elecstationary brake dlem adjacent the clutch tro-magnetic means controlled by said 100 plate, means normally thrusting the'clutch switch, a toothed clutch-releasing cam, a plate into engagement with the brake disk, toothed toggle-releasing cam in fixed relaa film-controlled switch, a step-by-step election to the clutch-releasing cam, both of said tromagnetic means controlled by said switch, cams being rotated step by step by the eleca toothed clutch-releasing cam, a toothed tro-magnetic means, a rotatable expansible 195 toggle-releasing camin fixed relation to the cam, a toggle lever, means connecting the clutch-releasing cam, both of said cams betoggle lever to the clutch plate, means for ing rotated stepby-step by the electro -maglocking the toggle lever out of the path of netic means, a rotatable expansible cam, the expansible cam, means controlled by the means adapted to be engaged by the expansi-' toggle-releasing cam for releasing the toggle ble cam for thrusting the clutch plate into lever to permit it to move into the path engagement with the driving plate, means of said cam, means for lockingthe toggle for locking the said thrusting means out of lever in position to hold the clutch plate in the path of the expansible cam, means operengagement with the driving plate, and

ated by the toggle-releasing cam for releasmeans operated by the clutch-releasing cam ing said locking means to permit the thrustfor releasing said locking means to permit ing means to move into the path of said the clutch plate to be moved into engagement cam, means for locking the clutch plate with the brake disk.

thrusting means in position to hold the 20. A talking moving picture apparatus clutch plate locked to the driving plate, and comprising means for moving a picture film,

means operated by the clutch-releasing cam a drive shaft, a record-carrying shaft, a

for releasing said locking means to permit driving plate connected to the drive shaft,

the clutch plate to move into engagement a clutch plate connected to the record-carrywith the brake disk, the teeth of the clutching shaft and movable axlally thereof, a sta- 60 releasing cam being staggered with respect tionary brake disk adjacent the clutch plate, to the teeth of the toggle-releasing cam means normally thrusting the clutch plate whereb said cams will operate their assointo engagementwith the brake disk, a filmciated evices on alternate steps of the eleccontrolled switch, a step-by-stepelectro-magtro-magnetie device. netic means controlled by said switch, a

05 18. A talking moving picture apparatus toothed clutch-releasing cam, a toothed tog- 

